You're welcome, my pleasure.

Different types of forgotten, yes. LOSING GROUND is a lot more forgotten than THE GHOST WRITER. The latter is available on six different platforms, and you can watch it right now for free on YouTube. https://www.youtube.com/watch?v=-16vKFCmylc
LOSING GROUND is only available on the Criterion Channel, and you have to join up, if only temporarily, to watch it.

Maybe THE GHOST WRITER isn't forgotten at all. It even got back its production cost, apparently. It's just not in the list of great films. Nobody saw LOSING GROUND. Very large difference.